Remove Ruby file check.

cmd/lib/changed_files.rb

@@ -20,20 +20,11 @@ def changed_files
       "git", args: ["diff", "--name-only", "--diff-filter=A", commit_range], chdir: path
     ).stdout.split("\n").map { |path| Pathname(path) }
 
-    modified_ruby_files = modified_files.select { |path| path.extname == ".rb" }
-    modified_command_files = modified_files.select { |path| path.ascend.to_a.last.to_s == "cmd" }
-    modified_github_actions_files = modified_files.select { |path| path.to_s.start_with?(".github/actions/") }
     modified_cask_files = modified_files.select { |path| cask_file?(path) }
-    modified_formula_files = modified_files.select { |path| formula_file?(path) }
 
     {
-      modified_files:,
       added_files:,
-      modified_ruby_files:,
-      modified_command_files:,
-      modified_github_actions_files:,
       modified_cask_files:,
-      modified_formula_files:,
     }
   end
 end

cmd/lib/ci_matrix.rb

@@ -121,23 +121,6 @@ def self.generate(tap, labels: [], cask_names: [], skip_install: false, new_cask
 
     changed_files = tap.changed_files
 
-    ruby_files_in_wrong_directory =
-      changed_files[:modified_ruby_files] - (
-      changed_files[:modified_cask_files] +
-      # Allow third-party taps to include both formulae/casks.
-      (tap.official? ? changed_files[:modified_formula_files] : []) +
-      changed_files[:modified_command_files] +
-      changed_files[:modified_github_actions_files]
-    )
-
-    if ruby_files_in_wrong_directory.any?
-      ruby_files_in_wrong_directory.each do |path|
-        puts "::error file=#{path}::File is in wrong directory."
-      end
-
-      odie "Found Ruby files in wrong directory:\n#{ruby_files_in_wrong_directory.join("\n")}"
-    end
-
     cask_files_to_check = if cask_names.any?
       cask_names.map do |cask_name|
         Cask::CaskLoader.find_cask_in_tap(cask_name, tap).relative_path_from(tap.path)